{
  "annotation_id": "981f02f1-51ff-4fca-ae7c-724cd76a7718",
  "date_created": "2026-03-02T18:02:41.089000Z",
  "date_modified": "2026-03-02T18:02:41.089000Z",
  "file_hash": "7c168de31dfd5b5669c7fa8a70b03f16353dbaea76884366164b7bbef8d9a5e4",
  "private": false,
  "record": {
    "abstract": "A mesoscopic evolution equation for an ensemble of mesoparticles follows\nafter the elimination of internal degrees of freedom. If the system is composed\nof a hierarchy of scales, the reduction procedure could be worked repeatedly\nand the characterization of this iterating method is carried out. Namely, a\nprescription describing a discrete hierarchy of master equations for the\ndensity operator is obtained. Decoherence follows from the irreversible\ncoupling of the systems, defined by mesoscopic variables, to internal degrees\nof freedom. We discuss briefly the existence of systems with the same dynamics\nlaws at different scales. We made an explicit calculation for an ensemble of\nparticles with internal harmonic interaction in an external anharmonic field.\nNew conditions related to the semiclassical limit for mesoscopic systems\n(Wigner-function) are conjectured.",
    "arxiv_id": "quant-ph/9803032",
    "authors": [
      "J. C. Flores"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/0305-4470/31/43/006",
    "journal_ref": "J.Phys.A31:8623-8633,1998",
    "title": "Decoherence from internal degrees of freedom for cluster of   mesoparticles : a hierarchy of master equations",
    "url": "https://arxiv.org/abs/quant-ph/9803032"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "dca73bfb-bdcc-4c41-96a1-ef2321aeca4e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}